′�?, that has a frequency of 295 cm−one, is attributed to your stretching vibration of Ga–Se bonds. The two-phonon absorption of your 295 cm−one phonon corresponds for the crystal IR absorption edge, in lieu of the residual absorption peak. Density useful principle computations show the residual absorption with the BGSe https://paxtonakors.blogpayz.com/32530284/the-smart-trick-of-baga4se7-crystal-that-nobody-is-discussing